And some of the gambling games I've noticed up to now are just football betting which I don't think will make a person addicted to it. Compared to slot games and others that tend to use games at a glance, of course someone's psychology will be easily attracted and will continue to try. While football betting, as you said, is based on hobbies and even interests, the level of addiction will be minimal.
Some of gambler want to get profit soon as possible and try with casino but with sport betting actually with football have waiting more than 90 minutes until match ended, have some one using multi bet will wait until several days later with result because have several match choose in different day. Maybe this reason why have several gambler likely with casino than sport betting, how instant result and profit or loss getting than sport betting, but not every day have sport competition actually when several league on the world have ended.